| Title | Recycling Wastewater in Intensive Swine Farms: Selected Case Studies in Vietnam |
|---|---|
| ID_Doc | 27181 |
| Authors | Giang, NTH; An, NT; Huong, LTT; Yabe, M; Mang, NT; Hieu, VN; Son, CT |
| Title | Recycling Wastewater in Intensive Swine Farms: Selected Case Studies in Vietnam |
| Year | 2021 |
| Published | Journal Of The Faculty Of Agriculture Kyushu University, 66.0, 1 |
| Abstract | Recycling livestock wastewater has been promoted as an appropriate pathway to attain animal waste mitigation and contribute to circular economy. In comparison to other livestock, swine production is considered as a potential sector for wastewater reuse because of its' rich nutrient. However, in developing countries, livestock wastewater was claimed to be one of the main sources of water pollution due to the poor treatment and inefficient usage. In order to provide information for further policies aiming at recycling this type of resources, this study investigate how swine farms currently manage their wastewater and identify some major challenges. Questionnaire interviews were conducted in 123 intensive swine farms located in four provinces: Ha Noi, Thai Binh, Ha Tinh and Dong Nai. The results showed that, recycling wastewater has been accepted by a haft of intensive swine farms, although the national technical standard on reuse of livestock wastewater has not been legally promulgated. The farms use wastewater to irrigate different types of plants such as fruit trees, vegetable and cash trees. While 37.4% of swine farms applying wastewater to fruit trees, only 15.4% and 8.9% of the farms used it to irrigate vegetable and cash trees, respectively. However, the wastewater samples analysis of nine farms pointed out that, many other components of swine wastewater might be harmful for environment and other living organism, especially coliform contamination. The study proposes that, reusing wastewater is an appropriate solution to increase the efficient use of water in swine production, provided that specific technical standards are required to minimize risks to the environment and other production activities. |
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